mirror of git://gcc.gnu.org/git/gcc.git
37 lines
1.2 KiB
Fortran
37 lines
1.2 KiB
Fortran
C******************************************************************************
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C FILE: omp_hello.f
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C DESCRIPTION:
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C OpenMP Example - Hello World - Fortran Version
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C In this simple example, the master thread forks a parallel region.
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C All threads in the team obtain their unique thread number and print it.
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C The master thread only prints the total number of threads. Two OpenMP
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C library routines are used to obtain the number of threads and each
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C thread's number.
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C AUTHOR: Blaise Barney 5/99
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C LAST REVISED:
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C******************************************************************************
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PROGRAM HELLO
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INTEGER NTHREADS, TID, OMP_GET_NUM_THREADS,
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+ OMP_GET_THREAD_NUM
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C Fork a team of threads giving them their own copies of variables
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!$OMP PARALLEL PRIVATE(NTHREADS, TID)
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C Obtain thread number
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TID = OMP_GET_THREAD_NUM()
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PRINT *, 'Hello World from thread = ', TID
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C Only master thread does this
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IF (TID .EQ. 0) THEN
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NTHREADS = OMP_GET_NUM_THREADS()
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PRINT *, 'Number of threads = ', NTHREADS
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END IF
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C All threads join master thread and disband
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!$OMP END PARALLEL
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END
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